 <!DOCTYPE html>
<html>
 
<head>
<title>
HTMLTablesCalculatorLayout
</title>
</head>
 
 
<body>
 
<header>
menu
</header>
 
<table cellspacing="0" cellpadding="5" border="2">
 
<tbody>
<tr>
<input type="text" name="numbers" value="0" />
</tr>
 
<tr>
<td> <input type="button" value="1" /></td>
<td> <input type="button" value="2" /></td>
<td>  <input type="button" value="3" /> </td>
<td>  <input type="button" value="+" /> </td>
</tr>
 
<tr>
<td> <input type="button" value="4" /> </td>
<td> <input type="button" value="5" /> </td>
<td> <input type="button" value="6" /> </td>
<td> <input type="button" value="-" /> </td>
</tr>
 
<tr>
<td>  <input type="button" value="7" /> </td>
<td>  <input type="button" value="8" /> </td>
<td>  <input type="button" value="9" /> </td>
<td>  <input type="button" value="*" /> </td>
</tr>
 
<tr>
<td colspan="2"> <input type="button" value="0"</td>
 
<td>  <input type="button" value="." /></td>
<td> <input type="button" value="/" /> </td>
</tr>
 
</tbody>
 
</table>
 
</body>
 
</html>